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Thursday - August 23, 2007

From: PARADISE, TX
Region: Southwest
Topic: Compost and Mulch, Grasses or Grass-like
Title: Encouraging native grasses to flourish
Answered by: Nan Hampton and Joe Marcus

QUESTION:

We have been trying to restore the yard around the house with native grasses and forbs for the last two years. The soil is clay and nothing seems to grow. We have distributed 5 truck loads of mulch, planted little bluestem, planted side oats grama and all is so slow to grow. Any suggestions of another grass that we might try to use on the grounds adjacent to the yard. The rest of the property is covered with native trees. Husband is getting "antsy" as all looks rather unkempt and even ugly because the grasses are so sparse and keeping out the Johnson grass, ragweed, bermuda (where did that come from?) is not so easy for us old farts!

ANSWER:

Although it doesn't sound as if you are trying to establish a turf lawn, Mr. Smarty Plants is going to recommend an article, "Native Lawns", from our How to Articles. This article features Bouteloua dactyloides (buffalograss), a grass you didn't mention in your question. If your area gets full sun, buffalo grass would be ideal because it loves the sun, doesn't require much water, and doesn't grow tall. I am supposing that you sowed seeds for your other grasses. You can do this for the buffalo grass, too, but you can also buy sod. Sod is more expensive than seeds, but you can separate the sod into "plugs" to plant so that you can cover a greater area. Combining seeds and plugs should give you nice coverage. although you can sow grass seeds in late summer, spring is really the best time. Sod or plugs can be planted anytime.

Another shorter grass that you might consider is Bouteloua gracilis (blue grama). Another attractive shorter grass that does well in our area is Aristida purpurea (purple threeawn).

Native American Seed in Junction also has a good article, Planting tips for Native Grasses, that might be helpful.

Depending on how your five truckloads of mulch were used, they could have been either helpful or a hindrance to developing your landscape. If you were trying to improve your soil, then compost or good topsoil -- not mulch -- mixed into the clay would improve the soil. Mulch should be used only as a surface cover to help retain moisture and control some weeds.

Johnson grass and ragweeds are denizens of disturbed soils. Once other vegetation is well-established and the soil is no longer being disturbed, Johnson grass and ragweed tend to disappear. Bermudagrass is another story. It will grow persistently wherever it gets enough light. The trick to eradicating Bermudagrass is to be even more persistent in removing it. It will not be a simple process.


Bouteloua dactyloides

Bouteloua gracilis

Aristida purpurea

 

 

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